Russian Social Network Founder Quits

Vkontakte Far Outstrips Facebook in Russia

MOSCOW—The iconoclastic founder and chief executive of VKontakte, Russia's most popular social network, said Tuesday that he is leaving the company just months after selling his stake amid a feud with another shareholder.

The departure of 29-year-old Pavel Durov marks the end of a rocky chapter for the seven-year-old company as it coped with the ownership struggle, worries the government was seeking to rein in the site and Mr....